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//===-- MIUtilSystemWindows.cpp ---------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//++
// File: MIUtilSystemWindows.cpp
//
// Overview: CMIUtilSystemWindows implementation.
//
// Environment: Compilers: Visual C++ 12.
// gcc (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
// Libraries: See MIReadmetxt.
//
// Copyright: None.
//--
#if defined( _MSC_VER )
// Third party headers
#include <memory> // std::unique_ptr
#include <Windows.h>
#include <WinBase.h> // ::FormatMessage()
// In-house headers:
#include "MIUtilSystemWindows.h"
#include "MICmnResources.h"
//++ ------------------------------------------------------------------------------------
// Details: CMIUtilSystemWindows constructor.
// Type: Method.
// Args: None.
// Return: None.
// Throws: None.
//--
CMIUtilSystemWindows::CMIUtilSystemWindows( void )
{
}
//++ ------------------------------------------------------------------------------------
// Details: CMIUtilSystemWindows destructor.
// Type: Method.
// Args: None.
// Return: None.
// Throws: None.
//--
CMIUtilSystemWindows::~CMIUtilSystemWindows( void )
{
}
//++ ------------------------------------------------------------------------------------
// Details: Retrieve the OS system error message for the given system error code.
// Type: Method.
// Args: vError - (R) OS error code value.
// vrwErrorMsg - (W) The error message.
// Return: MIstatus::success - Functional succeeded.
// MIstatus::failure - Functional failed.
// Throws: None.
//--
bool CMIUtilSystemWindows::GetOSErrorMsg( const MIint vError, CMIUtilString & vrwErrorMsg ) const
{
// Reset
vrwErrorMsg.clear();
const MIuint nBufLen = 1024;
std::unique_ptr< char[] > pBuffer;
pBuffer.reset( new char[ nBufLen ] );
// CMIUtilString Format is not used as cannot replicate the behavior of ::FormatMessage which
// can take into account locality while retrieving the error message from the system.
const int nLength = ::FormatMessage( FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
nullptr, (DWORD) vError, MAKELANGID( LANG_NEUTRAL, SUBLANG_DEFAULT ),
reinterpret_cast< LPTSTR >( &pBuffer[ 0 ] ),
nBufLen, nullptr );
bool bOk = MIstatus::success;
if( nLength != 0 )
vrwErrorMsg = &pBuffer[ 0 ];
else
bOk = MIstatus::failure;
return bOk;
}
//++ ------------------------------------------------------------------------------------
// Details: Retrieve if possible the OS last error description.
// Type: Method.
// Args: None.
// Return: CMIUtilString - Error description.
// Throws: None.
//--
CMIUtilString CMIUtilSystemWindows::GetOSLastError( void ) const
{
CMIUtilString errorMsg;
const DWORD dwLastError = ::GetLastError();
if( dwLastError != 0 )
{
if( !GetOSErrorMsg( dwLastError, errorMsg ) )
errorMsg = MIRSRC( IDE_OS_ERR_RETRIEVING );
}
else
errorMsg = MIRSRC( IDE_OS_ERR_UNKNOWN );
return errorMsg;
}
//++ ------------------------------------------------------------------------------------
// Details: Retrieves the fully qualified path for the this application. If the function
// fails the string is filled with the error message.
// Type: Method.
// Args: vrwFileNamePath - (W) The excutable's name and path or last error description.
// Return: MIstatus::success - Functional succeeded.
// MIstatus::failure - Functional failed.
// Throws: None.
//--
bool CMIUtilSystemWindows::GetExecutablesPath( CMIUtilString & vrwFileNamePath ) const
{
bool bOk = MIstatus::success;
HMODULE hModule = ::GetModuleHandle( nullptr );
char pPath[ MAX_PATH ];
const DWORD nLen = ::GetModuleFileName( hModule, &pPath[ 0 ], MAX_PATH );
const CMIUtilString strLastErr( GetOSLastError() );
if( (nLen != 0) && (strLastErr == "Unknown OS error") )
vrwFileNamePath = &pPath[ 0 ];
else
{
bOk = MIstatus::failure;
vrwFileNamePath = strLastErr;
}
return bOk;
}
//++ ------------------------------------------------------------------------------------
// Details: Retrieves the fully qualified path for the Log file for this application.
// If the function fails the string is filled with the error message.
// Type: Method.
// Args: vrwFileNamePath - (W) The Log file's name and path or last error description.
// Return: MIstatus::success - Functional succeeded.
// MIstatus::failure - Functional failed.
// Throws: None.
//--
bool CMIUtilSystemWindows::GetLogFilesPath( CMIUtilString & vrwFileNamePath ) const
{
return GetExecutablesPath( vrwFileNamePath );
}
#endif // #if defined( _MSC_VER )
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